
    <el-header style=" font-size: 12px; display: flex">
        <div style="flex:1;font-size: 18px; width: 200px">
            <span :class="collapseBtnClass" style="cursor: pointer" @click="collapse"></span>
        </div>
        <div style="flex:1.2;font-size: 25px">
            <b style="color: black">Jpetstore后台管理系统</b>
        </div>
        <el-dropdown>
            <i class="el-icon-arrow-down"></i>
            <i class="el-icon-setting" style="margin-right: 15px"></i>
            <el-dropdown-menu slot="dropdown">
                <el-dropdown-item>个人中心</el-dropdown-item>
                <el-dropdown-item>退出</el-dropdown-item>

            </el-dropdown-menu>
        </el-dropdown>
        <span>朱阳</span>
    </el-header>
